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stellarik [79]
3 years ago
15

......... anyone will y’all help

Mathematics
1 answer:
fredd [130]3 years ago
3 0

Answer:

b

Step-by-step explanation:

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The average person has about 100,000 hairs on their head. However, people with red hair
nirvana33 [79]

Answer:

90,000

Step-by-step explanation:

................

5 0
2 years ago
Find f(-2) when f(t) = -2t + 3<br><br> A) -7 <br> B) -1 <br> C) 1 <br> D) 7
Lady bird [3.3K]

Answer: -1

Step-by-step explanation:

f(t) =  -2t + 3

f(-2) = -2 x -2 + 3                [ substituting the value]

f(-2) = -4 + 3

f(-2) = -1

5 0
3 years ago
The vertex of this parabola is at (2, -4). When the y-value is -1, the x-value is 3. What is the coefficient of the squared term
rjkz [21]

Answer:

3

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (2, - 4) , thus

y = a(x - 2)² - 4

To find a substitute (3, - 1 ) into the equation

- 1 = a(3 - 2)² - 4 ( add 4 to both sides )

3 = a

Thus

y = 3(x - 2)2 - 4 ← equation in vertex form

   = 3(x² - 4x + 4) + 4

    = 3x² - 12x + 12 + 4

     = 3x² - 12x + 16 ← equation in standard form

with coefficient of x² term = 3

5 0
3 years ago
Find the product of −1 and −3
Lesechka [4]

Step-by-step explanation:

the product of −1 and −3

(-1)×(-3)

= 3

7 0
3 years ago
Read 2 more answers
There are 7 boxes stacked on the floor in the math department supply closet. Each box has a height of 10 inches or 8 inches. The
Orlov [11]

Answer:

5 of the 7 boxes are 8 inches in height

Step-by-step explanation:

Mathematically;

1 ft = 12 inches

So, 5 ft will measure 5 * 12 = 60 inches

So from what we have ,

We want to combine 8 and 10 inches to give 60 inches total

Let the number of 10 inches be x and the number of 8 inches be y

Mathematically;

x + y = 7 •••••(i)

10x + 8y = 60 ••••(ii)

From equation i, x = 7-y

Put this in equation ii

10(7-y) + 8y = 60

70-10y + 8y = 60

70-60 = 10y-8y

2y = 10

y = 10/2

y = 5

5 0
3 years ago
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